#!/bin/bash
s='log.retention.hours=12
delete.topic.enable=true
leader.imbalance.check.interval.seconds=300
leader.imbalance.per.broker.percentage=10
log.dir=/var/kafka/data1'
line='/var/kafka/data1,/var/kafka/data2,/var/kafka/data3,/var/kafka/data4,/var/kafka/data5,/var/kafka/data6,/var/kafka/data7,/var/kafka/data8'
sed "s~^log\.dir.*~log.dir=$line~g" <<< "$s"